Note: Boards/Panels sizes in the above document are in inches,
for convenience below the sizes in cm. You can use rounded sizes

12×16 ->: 30.5 cm x 40.6 cm
or 11×14 -> 27.9 cm x 35.5 cm
so about 30cm x 40cm,
bring multiple red and/or green toned panels/boards.

….but not larger than 16 x 20. -> 40.6 cm x 50.8 cm.
so not larger then 40cm x 50cm

an bring a small board to be used as palette and a clamp to attach this palette vertically beside your painting

Copper:
6×6 -> 15.24 cm x 15.24 cm
8×10 -> 20.32 cm x 25.4 cm
or 9 x 12 -> 22.86 cm x 30.48 cm

If you got any questions / doubts, please get in contact before the workshop
and maybe send images when needed.